Lathe



(No Model.)

L. BROWN, Sr.

LATHE.

No. 430,245. Patented June 17, 1890.

INVENTOR,

UNITED STATES PATENT OFFICE.

LOAM BROWN, SR, OF ROCHELLE, GEORGIA.

' LATH E.

SPECIFICATION forming part of Letters Patent No. 430,245, dated June 17, 1890.

Application filed October 1t), 1889.

To all whom it may concern.-

Be it known that I, LOAM BROWN, Sr., of Rochelle, in the county of Wilcox and State of Georgia, have invented certain new and useful Improvements in Lathes; and .I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in lathes, and more particularly to devices for turning irregular forms.

The object is to provide a simple and effective device by which an irregular form corresponding to a given pattern may be antomatically turned.

With these ends in view my invention consists in certain features of construction and combinations of parts, as will be hereinafter described, and pointed out in the claim.

In the accompanying drawings, Figure 1 represents the device in side elevation, the base being partly broken away. Fig. 2 is an end View, and Fig. 3 is a detached View, of a pattern.

A represents the base, which may be extended to any desired length as the class of work to be performed may demand. It consists, preferably, of two side pieces spread apart at the base and held at the proper distance from each other by cross-pieces B inserted at suitable intervals. A shaft 0 is journaled in the cross-pieces B and supports a pair of uprights D fixed thereto. The width of the arms or uprights D and the space between the sides A of the base are so related asto permit the said uprights to swing transversely to the base freely within a desired limited distance. The uprights D are firmly secured to swing together by means ofa wide intervening brace E, or several braces might be substituted at intervals to hold the said uprights rigidly together. In the, upper ends of the uprights D the lathe-spindle F is journaled, and on it is secured the ordinary conepulley G. There is also secured to thelathespindle, preferably in proximity to the base of the cone-pulley, a pattern-disk H, having a rim h projecting laterally therefrom and corresponding to the shape of the article to be turned. A standard I is firmly secured at Serial No. 326,614. (No model.)

its lower end to the base A and extends upwardly along the edge of the pattern-disk H. At a point about horizontally opposite the center of the pattern-disk the standard I is provided with an arm which projects from its inner face toward the axis of the patterndisk. Said arm is represented by the letter K, and-on its free end it is provided with a lug k, which projects beneath the rim h. A set-screw L is provided which works through the standard I, and is provided on its inner end with a shoe Zto engage the outer portion of the rim h and hold it in loose contact with the lug It, so that as the lathe-spindle carrying the pattern-disk thereon is rotated it will cause the rim h to follow between the lugkand the set-screw, and as the latter is stationary it will cause the uprights D to swing laterally toward and away from the standard I in accordance with the shape of the pattern-rim. A face-plate M, secured to the spindle F and carrying the work to be operated upon, will necessarily carry the work toward and away from a stationary or rotary cutter of any well-known and approved form, in strict accordance with the movements of the patterndisk, and will therefore cause the work to be turned as a fac-simile in periphery of the rim h on the pattern-disk.

Having thus fully described my invention,

, whatI claim as new, and desire to secure by Letters Patent, is-

In combination, a base, a pair of uprightsmounted in the base and adapted to swing laterally thereto, a spindle journaled in the upper ends of the upright and provided with means for supporting the work to be operated upon, a pattern-disk secured on the spindle and provided with a laterally-projected pattern-rim, a standard firmly fixed to the base and having its upper end projected inward and provided with a lug to engage the rim of the pattern, and a set-screw secured to the upper end of said standard and provided with a shoe, substantially as set forth.

In testimony whereof I have signed this WVitnesses:

JOHN M. WARREN, JOHN H. MARTIN. 

